Ma'anar ƙamus na kalmar "achene" ƙarami ne, bushe, 'ya'yan itace iri ɗaya wanda ba ya rarrabuwa a lokacin girma, kamar ƙwayar sunflower ko ƙwayar alkama. Yawancin lokaci ana lullube shi a cikin wani harsashi mai ƙarfi, sirara da ake kira pericarp, wanda baya buɗewa don sakin iri. Ana yawan samun Achenes a cikin tsire-tsire kamar sunflowers, Dandelion, da strawberries.
